Detailed 1) Heat transfered rapidly. 2) Friendly combinnation with the architecture. 3) No water in tube,can work even if tube broken Working principle: 1) When the temperature of the heat collector reaches the set value.

Detailed 1) Heat transfered rapidly. 2) Friendly combinnation with the architecture. 3) No water in tube,can work even if tube broken Working principle: 1) When the temperature of the heat collector reaches the set value.

Detailed 1) Heat transfered rapidly. 2) Friendly combinnation with the architecture. 3) No water in tube,can work even if tube broken Working principle: 1) When the temperature of the heat collector reaches the set value.